X: The Unknown

Army radiation experiments awaken a subterranean monster from a fissure that feeds on energy and proceeds to terrorise a remote Scottish village. An American research scientist at a nearby nuclear plant joins with a British investigator to discover why the victims were radioactively burned and why, shortly thereafter, a series of radiation-related incidents are occurring in an ever-growing straight line away from the fissure.

Cast

Dean Jagger

Dr. Adam Royston

Leo McKern

Inspector McGill

William Lucas

Peter Elliott

Edward Chapman

John Elliott

John Harvey

Maj. Cartwright